3940947 has 16 divisors (see below), whose sum is σ = 5873280. Its totient is φ = 2611656.

The previous prime is 3940943. The next prime is 3940967. The reversal of 3940947 is 7490493.

It is not a de Polignac number, because 3940947 - 2² = 3940943 is a prime.

3940947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3940943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5808 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (367080).

Almost surely, 2^3940947 is an apocalyptic number.

3940947 is a deficient number, since it is larger than the sum of its proper divisors (1932333).

3940947 is a wasteful number, since it uses less digits than its factorization.

3940947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3940947 is about 1985.1818556495. The cubic root of 3940947 is about 157.9550558487.

The spelling of 3940947 in words is "three million, nine hundred forty thousand, nine hundred forty-seven".